Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/17583
Title: Tracing the geographical origin of thai hom mali rice in three contiguous provinces of thailand using stable isotopic and elemental markers combined with multivariate analysis
Authors: Kongsri S.
Sricharoen P.
Limchoowong N.
Kukusamude C.
Issue Date: 2021
Abstract: Rice is a staple food for more than half of the world’s population. The discrimination of geographical origin of rice has emerged as an important issue to prevent mislabeling and adulteration problems and ensure food quality. Here, the discrimination of Thai Hom Mali rice (THMR), registered as a European Protected Geographical Indication (PGI), was demonstrated. Elemental compositions (Mn, Rb, Co, and Mo) and stable isotope (δ18O) in the rice were analyzed using inductively coupled plasma mass spectrometry (ICP‐MS) and elemental analyzer isotope ratio mass spectrometry (EA‐IRMS), respectively. The recoveries and precisions of all elements were greater than 98% and lower than 9%, respectively. The analytical precision (±standard deviation) was below ±0.2‰ for δ18O measurement. Mean of Mn, Rb, Co, Mo, and δ18O levels was 14.0 mg kg−1, 5.39 mg kg−1, 0.049 mg kg−1, 0.47 mg kg−1, and 25.22‰, respectively. Only five valuable markers combined with radar plots and multivariate analysis, linear discriminant analysis (LDA) could distinguish THMR cultivated from three contiguous provinces with correct classification and cross-validation of 96.4% and 92.9%, respectively. These results offer valuable insight for the sustainable management and regulation of improper labeling regarding geographical origin of rice in Thailand and other countries. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
URI: https://ir.swu.ac.th/jspui/handle/123456789/17583
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116351300&doi=10.3390%2ffoods10102349&partnerID=40&md5=9d2b1457a2f9b3427f4f228cf4760163
ISSN: 23048158
Appears in Collections:Scopus 1983-2021

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